Both objects will have the same temperature, which is larger than T but smaller than 2*T
What is the thermodynamic equilibrium?
A system in equilibrium if it is not able to experience spontaneous changes.
Here, we assume that our system is just the two objects with the given temperatures, and nothing else.
Thus, when we put them together, the only thing that will happen is a heat transfer (from the hotter object to the other one), until both of them have the same temperature (when both objects have the same temperature the heat flux stops).
Also, the object with temperature 2*T loses temperature, while the object with temperature T increases its temperature, then we can conclude that the final temperature of both objects will be in between these:
T < Tₓ < 2*T
To get the exact final temperature, we would need more information.
So what will be true after some time has passed?
The only thing that we know will happen is:
Both objects will have the same temperature, which is larger than T but smaller than 2*T
If you want to learn more about thermodynamics, you can read:
https://brainly.com/question/13439286
